It’snoteasyfortheexperttopigfl

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It’s not easy for the expert to ______ pig flu.in humans from regular human seasonal influenza.

A．distinguish

B．separate

C．identify

D．recognize

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The chargefrom 5 dollars to 50 dollars, depending on the quality.

A．transforms	B．varies
C．trembles	D．evaluates

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--- I think a design whichall the ages and social groups is not easy to make.
---I can’t agree more with you.

A．appeals to	B．admits to
C．objects to	D．sticks to

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If youyour teacher’s advice, you would not have failed the exams last week.

A．take

B．were taking

C．took

D．had taken

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--- When did Lily’s brother finally stop drinking alcohol?
---It was in May ______ he was put into prison for drunk driving.

A．that

B．since

C．when

D．before

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---What do you think of ________ gifted chemist from London?
---Well, sometimes his behavior is beyond ________ comprehension.

A．a, the

B．the /

C．the the

D．a /

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